{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:G2OUZSS22NSG362LWC7FAVVQ45","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"831c7707cda27257a3589b0f7985e592d975ff4badb409ced9b62cf9ff4e24b1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-12-07T08:22:20Z","title_canon_sha256":"b520705b235aaa71204a99a7219546953ae4c2c3739d6d8c200f932198b1a437"},"schema_version":"1.0","source":{"id":"1812.07971","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.07971","created_at":"2026-05-17T23:57:55Z"},{"alias_kind":"arxiv_version","alias_value":"1812.07971v1","created_at":"2026-05-17T23:57:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.07971","created_at":"2026-05-17T23:57:55Z"},{"alias_kind":"pith_short_12","alias_value":"G2OUZSS22NSG","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"G2OUZSS22NSG362L","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"G2OUZSS2","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:0848dfc62031bc151242b943f03a9ff7e01fa986a5bfe5a707ef956575603198","target":"graph","created_at":"2026-05-17T23:57:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"This paper is concerned with possibility of recovery of motion and structure parameters from multiframes under perspective projection when only points on a rigid body are traced. Free (unrestricted and uncontrolled) pattern of motion between frames is assumed. The major question is how many points and/or how many frames are necessary for the task. It has been shown in an earlier paper {Klopotek:95b} that for orthogonal projection two frames are insufficient for the task. The paper demonstrates that, under perspective projection, that total uncertainty about relative position of focal point ver","authors_text":"Mieczys{\\l}aw A. K{\\l}opotek","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-12-07T08:22:20Z","title":"Rigid Body Structure and Motion From Two-Frame Point-Correspondences Under Perspective Projection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.07971","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:a1c40af4b866e7996958915d50db8cdc7eb00e91daadcf01157eef992e04f148","target":"record","created_at":"2026-05-17T23:57:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"831c7707cda27257a3589b0f7985e592d975ff4badb409ced9b62cf9ff4e24b1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-12-07T08:22:20Z","title_canon_sha256":"b520705b235aaa71204a99a7219546953ae4c2c3739d6d8c200f932198b1a437"},"schema_version":"1.0","source":{"id":"1812.07971","kind":"arxiv","version":1}},"canonical_sha256":"369d4cca5ad3646dfb4bb0be5056b0e757916be5d3bc61c90c8d38246bcb2e58","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"369d4cca5ad3646dfb4bb0be5056b0e757916be5d3bc61c90c8d38246bcb2e58","first_computed_at":"2026-05-17T23:57:55.351031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:57:55.351031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1GSRsRX12bXMuicmicCOMVLGI8x/Miqape2fyDdZVjXtjwBIeAw3qjkWFO7jJDAcpp/AInfuUDZWgVjt9m+aAA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:57:55.351718Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.07971","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1c40af4b866e7996958915d50db8cdc7eb00e91daadcf01157eef992e04f148","sha256:0848dfc62031bc151242b943f03a9ff7e01fa986a5bfe5a707ef956575603198"],"state_sha256":"263b4fcfc5bd1661c5acde959a05c418c4bf412f6328c33b6a1c0f32556fe261"}